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1. 发明公开

US20240355338A1 METHOD AND APPARATUS FOR METADATA-BASED DYNAMIC PROCESSING OF AUDIO DATA 审中-公开
公开(公告)号：US20240355338A1
公开(公告)日：2024-10-24
申请号：US18685413
申请日：2022-08-24
申请人： Dolby Laboratories Licensing Corporation , DOLBY INTERNATIONAL AB
发明人： Christof FERSCH , Scott Gregory NORCROSS
IPC分类号： G10L19/00 , G10L25/03
CPC分类号： G10L19/00 , G10L25/03
摘要： Described herein is a method of metadata-based dynamic processing of audio data for playback, the method including: receiving, by a decoder, a bitstream including audio data and metadata for dynamic loudness adjustment; decoding, by the decoder, the audio data and the metadata to obtain decoded audio data and the metadata; determining, by the decoder, from the metadata, one or more processing parameters for dynamic loudness adjustment based on a playback condition; applying the determined one or more processing parameters to the decoded audio data to obtain processed audio data; and outputting the processed audio data for playback. Described is further a method of encoding audio data and metadata for dynamic loudness adjustment into a bitstream. Moreover, described are a respective decoder and encoder, a respective system and computer program products.

2. 发明申请

US20200258534A1 TRANSMISSION-AGNOSTIC PRESENTATION-BASED PROGRAM LOUDNESS 审中-公开
公开(公告)号：US20200258534A1
公开(公告)日：2020-08-13
申请号：US16790352
申请日：2020-02-13
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Jeroen KOPPENS , Scott Gregory NORCROSS
IPC分类号： G10L19/16 , G10L21/034 , G10L19/24
摘要： This disclosure falls into the field of audio coding, in particular it is related to the field of providing a framework for providing loudness consistency among differing audio output signals. In particular, the disclosure relates to methods, computer program products and apparatus for encoding and decoding of audio data bitstreams in order to attain a desired loudness level of an output audio signal.

3. 发明申请

US20170221496A1 DECODING OF ENCODED AUDIO BITSTREAM WITH METADATA CONTAINER LOCATED IN RESERVED DATA SPACE 有权
公开(公告)号：US20170221496A1
公开(公告)日：2017-08-03
申请号：US15491661
申请日：2017-04-19
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Michael GRANT , Scott Gregory NORCROSS , Jeffrey RIEDMILLER , Michael WARD
IPC分类号： G10L19/16 , H03G9/00 , G10L19/002
CPC分类号： G10L19/167 , G10L19/002 , G10L19/06 , H03G9/005 , H03G9/025
摘要： Apparatus and methods for generating an encoded audio bitstream, including by including program loudness metadata and audio data in the bitstream, and optionally also program boundary metadata in at least one segment (e.g., frame) of the bitstream. Other aspects are apparatus and methods for decoding such a bitstream, e.g., including by performing adaptive loudness processing of the audio data of an audio program indicated by the bitstream, or authentication and/or validation of metadata and/or audio data of such an audio program. Another aspect is an audio processing unit (e.g., an encoder, decoder, or post-processor) configured (e.g., programmed) to perform any embodiment of the method or which includes a buffer memory which stores at least one frame of an audio bitstream generated in accordance with any embodiment of the method.

4. 发明申请

US20160219391A1 LOUDNESS ADJUSTMENT FOR DOWNMIXED AUDIO CONTENT 有权
标题翻译：下载音频内容的LOUDNESS调整
公开(公告)号：US20160219391A1
公开(公告)日：2016-07-28
申请号：US15091373
申请日：2016-04-05
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Michael WARD , Jeffrey RIEDMILLER , Scott Gregory NORCROSS , Alexander GROESCHEL
IPC分类号： H04S7/00 , H04S1/00
CPC分类号： H04S7/30 , G10L19/008 , G10L21/0324 , H04S1/002 , H04S1/007 , H04S2400/03 , H04S2400/13
摘要： Disclosed is a non-transitory computer readable storage medium which receives, by an audio decoder (operating in a specific playback environment different from a reference channel configuration), an audio signal for the reference channel configuration. The audio signal includes audio sample data and encoder-generated loudness metadata which includes a plurality of portions of loudness metadata for a plurality of playback environments. The plurality of portions of loudness metadata includes one or more respective portions of loudness metadata for each playback environment in the plurality of playback environments. The medium also selects one or more portions of specific loudness metadata (based on the specific playback environment), from among the plurality of portions of loudness metadata for the plurality of playback environments. The one or more portions of specific loudness metadata relating to the specific playback environment determine loudness adjustment gains from the one or more portions of specific loudness metadata for the specific playback environment, apply the loudness adjustment gains as a part of overall gains applied to the audio sample data to generate output audio data.
摘要翻译：公开了一种非暂时性计算机可读存储介质，其通过音频解码器（在特定播放环境中操作而不同于参考频道配置）接收用于参考频道配置的音频信号。音频信号包括音频采样数据和编码器生成的响度元数据，其包括用于多个回放环境的响度元数据的多个部分。响度元数据的多个部分包括多个回放环境中每个回放环境的响度元数据的一个或多个相应部分。介质还从多个播放环境的响度元数据的多个部分中选择特定响度元数据的一个或多个部分（基于特定播放环境）。与特定播放环境相关的特定响度元数据的一个或多个部分确定来自特定播放环境的特定响度元数据的一个或多个部分的响度调节增益，将响度调整增益应用为应用于音频的总体增益的一部分采样数据生成输出音频数据。

5. 发明申请

US20160219390A1 LOUDNESS ADJUSTMENT FOR DOWNMIXED AUDIO CONTENT 有权
标题翻译：下载音频内容的LOUDNESS调整
公开(公告)号：US20160219390A1
公开(公告)日：2016-07-28
申请号：US15091366
申请日：2016-04-05
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Michael WARD , Jeffrey RIEDMILLER , Scott Gregory NORCROSS , Alexander GROESCHEL
IPC分类号： H04S7/00 , H04S1/00
CPC分类号： H04S7/30 , G10L19/008 , G10L21/0324 , H04S1/002 , H04S1/007 , H04S2400/03 , H04S2400/13
摘要： Audio content coded for a reference speaker configuration is downmixed to downmix audio content coded for a specific speaker configuration. One or more gain adjustments are performed on individual portions of the downmix audio content coded for the specific speaker configuration. Loudness measurements are then performed on the individual portions of the downmix audio content. An audio signal that comprises the audio content coded for the reference speaker configuration and downmix loudness metadata is generated. The downmix loudness metadata is created based at least in part on the loudness measurements on the individual portions of the downmix audio content.
摘要翻译：针对参考扬声器配置编码的音频内容被下混合以下混合针对特定扬声器配置编码的音频内容。在针对特定扬声器配置编码的下混音频内容的各个部分上执行一个或多个增益调整。然后对缩混音频内容的各个部分执行响度测量。产生包括为参考扬声器配置编码的音频内容和降混响度元数据的音频信号。至少部分地基于对混音音频内容的各个部分的响度测量来创建缩混响度元数据。

6. 发明申请

US20150363160A1 System and Method for Optimizing Loudness and Dynamic Range Across Different Playback Devices 有权
标题翻译：用于优化不同播放设备的响度和动态范围的系统和方法
公开(公告)号：US20150363160A1
公开(公告)日：2015-12-17
申请号：US14761888
申请日：2014-01-15
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Jeffrey RIEDMILLER , Scott Gregory NORCROSS , Karl Jonas ROEDEN
IPC分类号： G06F3/16 , H04R29/00
CPC分类号： G06F3/165 , H03G9/005 , H04R29/00
摘要： Embodiments are directed to a method and system for receiving, in a bitstream, metadata associated with the audio data, and analyzing the metadata to determine whether a loudness parameter for a first group of audio playback devices are available in the bitstream. Responsive to determining that the parameters are present for the first group, the system uses the parameters and audio data to render audio. Responsive to determining that the loudness parameters are not present for the first group, the system analyzes one or more characteristics of the first group, and determines the parameter based on the one or more characteristics.
摘要翻译：实施例涉及一种用于在比特流中接收与音频数据相关联的元数据以及分析元数据以确定第一组音频回放设备的响度参数在比特流中是否可用的方法和系统。响应于确定第一组的参数存在，系统使用参数和音频数据来呈现音频。响应于确定第一组不存在响度参数，系统分析第一组的一个或多个特性，并且基于一个或多个特性来确定参数。

7. 发明申请

US20180095718A1 SYSTEM AND METHOD FOR OPTIMIZING LOUDNESS AND DYNAMIC RANGE ACROSS DIFFERENT PLAYBACK DEVICES 审中-公开
公开(公告)号：US20180095718A1
公开(公告)日：2018-04-05
申请号：US15835241
申请日：2017-12-07
申请人： Dolby Laboratories Licensing Corporation , DOLBY INTERNATIONAL AB
发明人： Jeffrey RIEDMILLER , Scott Gregory NORCROSS , Karl Jonas ROEDEN
IPC分类号： G06F3/16 , H04R29/00 , H03G9/00
摘要： Embodiments are directed to a method and system for receiving, in a bitstream, metadata associated with the audio data, and analyzing the metadata to determine whether a loudness parameter for a first group of audio playback devices are available in the bitstream. Responsive to determining that the parameters are present for the first group, the system uses the parameters and audio data to render audio. Responsive to determining that the loudness parameters are not present for the first group, the system analyzes one or more characteristics of the first group, and determines the parameter based on the one or more characteristics.

8. 发明申请

US20180012609A1 TRANSMISSION-AGNOSTIC PRESENTATION-BASED PROGRAM LOUDNESS 审中-公开
公开(公告)号：US20180012609A1
公开(公告)日：2018-01-11
申请号：US15677919
申请日：2017-08-15
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Jeroen KOPPENS , Scott Gregory NORCROSS
IPC分类号： G10L19/16 , G10L21/034 , G10L19/24
摘要： This disclosure falls into the field of audio coding, in particular it is related to the field of providing a framework for providing loudness consistency among differing audio output signals. In particular, the disclosure relates to methods, computer program products and apparatus for encoding and decoding of audio data bitstreams in order to attain a desired loudness level of an output audio signal.

9. 发明申请

US20170249951A1 TRANSMISSION-AGNOSTIC PRESENTATION-BASED PROGRAM LOUDNESS 审中-公开
公开(公告)号：US20170249951A1
公开(公告)日：2017-08-31
申请号：US15517482
申请日：2015-10-06
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Jeroen KOPPENS , Scott Gregory NORCROSS
IPC分类号： G10L19/16 , G10L19/24 , G10L21/034
CPC分类号： G10L19/167 , G10L19/24 , G10L21/034
摘要： This disclosure falls into the field of audio coding, in particular it is related to the field of providing a framework for providing loudness consistency among differing audio output signals. In particular, the disclosure relates to methods, computer program products and apparatus for encoding and decoding of audio data bitstreams in order to attain a desired loudness level of an output audio signal.

10. 发明公开

US20240103801A1 SYSTEM AND METHOD FOR OPTIMIZING LOUDNESS AND DYNAMIC RANGE ACROSS DIFFERENT PLAYBACK DEVICES 审中-公开
公开(公告)号：US20240103801A1
公开(公告)日：2024-03-28
申请号：US18483082
申请日：2023-10-09
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Jeffrey RIEDMILLER , Scott Gregory NORCROSS , Karl Jonas ROEDEN
IPC分类号： G06F3/16 , H03G9/00 , H04R29/00
CPC分类号： G06F3/165 , H03G9/005 , H04R29/00
摘要： Embodiments are directed to a method and system for receiving, in a bitstream, metadata associated with the audio data, and analyzing the metadata to determine whether a loudness parameter for a first group of audio playback devices are available in the bitstream. Responsive to determining that the parameters are present for the first group, the system uses the parameters and audio data to render audio. Responsive to determining that the loudness parameters are not present for the first group, the system analyzes one or more characteristics of the first group, and determines the parameter based on the one or more characteristics.

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